I have problem adding controls from codebehind. What I want do to is to create two textboxes and one button, but I didn't manage to do it. I googled my problem, but only thing I get are results about dynamically adding controls.
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i have a gridview control i added checkbox contrl dynamically but i am not getiing the reference of checkbox in button clilck event here is my code Gridvew
[Code]....
.vb code
[Code]....
Adding an ImageButton to the ImageMap control as a child control. I am developing a map that will be contained some user-defined nodes. The user can click anywhere of the map to add the node to that location. X locations and Y Locations are stored in the database. Initializing the page all stored nodes will be created programmatically. My problem is that the created nodes are invisible. If I replace the ImageMap with a panel control then all dynamically created nodes will be visible but in this situation I cannot capture the X and Y locations.
protected System.Web.UI.WebControls.ImageButton
btn;
protected void Page_Load(object sender,
EventArgs e)
{
btn.ImageUrl = "Images/..."
}
override protected
void OnInit(EventArgs e)
{
btn = new ImageButton();
btn.ID = "btn1";
btn.Style["Position"] =
"Absolute";
btn.Style["Top"] =
"100px";
btn.Style["Left"] =
"100px";
ImageMap1.Controls.Add(btn);//... invisible nodes
// Panel1.Controls.Add(btn);//... visible nodes
base.OnInit(e);
}
So I have one of the following problems:
1. Adding child to the ImageMap Control OR
2. Capturing the mouse X and Y Locations in the panel
I'm trying to do something that should be very simple, but getting completely stumped on why it's not working.
I have a page that has a few calendar controls, and when the user clicks a date, I want it to toggle the value (in this case it's the "availability" of the date).
I don't want it to post back with every calendar click, so what I'm doing is:
1. During the dayrender event, a Hidden Field gets added to the day. (As it is created, the Hidden Field is added to an array so that it can be retrieved later.)
2. When the user clicks, the value of the Hidden Field is toggled using JavaScript.
3. Once the user is done marking unavailable days, they click a Save button, which gets the values, and saves them to the database.
The Hidden Fields are getting added, and toggling is working just fine. The problem is that when the user clicks the Save button, all the Hidden Fields and their values get cleared, so at the time of the save, it thinks the length of the Hidden Field array is 0.
I think it has something to do with the order in whcih the page is rendered, and the "Save" code executed, but I'm not sure how to fix it. I'm doing something almost identical on another page that works fine - the only difference is that on that page there are no calendar controls, so instead of being added at dayrender, the dynamic controls are added on page load.
If I wanted to add a Hidden Field for each day in a calendar, whose value I can change with Javascript, how do I go about it in a way that I can access the values when clicking a Save button?
I'm trying to essentially add a dropdownlist control array to a from from the code-behind but I am getting an HttpException error saying that it must be placed inside a form tag with runat=server. How can I do this? This is the code I have right now for it:
DropDownList[] cmbArray = new DropDownList[8];
cmbArray[0] = new DropDownList();
Page.Controls.Add(synthesisSteps[0]);
This is in the Page_Load event. Also I am using .NET 3.5.
I am looking for some advice on how to accomplish something. What I have is a gridview on a page that I want on another page. I would like to show this gridview in a modalpopup.The problem is that the gridview is on a page that is not open and is not likely to be the previous page. I have simply put an iframe inside the modalpopup and loaded the page containing the gridview, however this page is a child page and I get a lot of content from the master page that I do not want. All I want from the page is the gridview.The two options I am considering are putting the gridview in the master page or copying the gridview, and all its events code, to the page that calls the modalpopup.Is there a better way to do this? Or should I just put the gridview in the master page. Can I load a control from a page that isn't open?
View 6 RepliesLong time programmer just now getting into .NET so There may be something better but I would like to use the Graphics Server Extended Graph (Graphs32.ocx) on my form.
I tried to put it in the Toolbox by going to Tools --> Choose Toolbox Items --> Com Components tab
then check that item and press OK. From what I saw in help files, it should now appear in the Toolbox. Unfortunately, I can't find it anywhere. Did I miss a step in this process? I then tried adding the ocx to the project Bin folder and repeating the steps. Still can't see it. If I can't get it onto the Toolbox, is there another way I could put the control on the form ?
I need to add ClientID of one control to another server control attribute
this line works
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so is there any way I can do it since I want to access this control on server side :s
I just wanted to add a textbox field as tree node instead of adding a label control(default),i tried overiding prerendering and post rendering function but not able to add a child node as textbox.
View 6 Repliesim just getting started with asp.net and so far im enjoying it! However at the moment im struggling to work out what is possible and what isnt. What i need is a menu control, where one of the submenu items drtops down to show the calender control... With any luck i can expand this so other controls are Drop Down menus, and text boxes etc.
<asp:Menu
ID="mainMenu"
runat="server"
[code]...
i had created one user control in c# and i want to add this user control in asp.net application.
View 1 RepliesMay i add the Dates from Database to calendar Control using the SelectedDate() method
because if iam using the SelectedDates() then if there is only one record come from database then nothing is displaying inside gridview and if there is more then one dates come from database then it is working suggest me the way to deal it .
so I avoid creating Server Controls like the plague, but I need one.
I have a Render method that creates a lot of divs. I use an animation extender to show and hide the divs within the server control.
But when adding the animation extender it tells me the control used for TargetControlID doesn't exist. How can I get the code for the animations to insert after the control has been rendered?
RenderContents method
[Code]....
I'm having difficulties with adding sub-properties into Property sheet.
for example:
let's say I've created a web-control with a textbox in it. I can add to my web-control a new property such as:
public TextBox MyTextBox
{
get
{
return m_TextBox;
}
set
{
m_TextBox = value;
}
}
and this will be enough for me to add the TextBox into the property sheet of the web control each time i use this web-control.
My problem is with adding the TextBox properties into the property sheet with the sign "+" next to the "MyTextBox" property.
I'm using VS2008 if it's make the difference.
I have an asp.net usercontrol which represents a "popup" dialog. Basically, it's a wrapper for the jQuery UI dialog which can be subclassed to easily make dialogs.
As part of this control, I need to inject a div into the page the control is used on, either at the very top or very bottom of the form so that when the popup is instantiated, it's parent is changed to this div. This allows "nested" popups without the child popup being trapped inside the parent popup. The trouble is, I can't find a safe way to inject this div into the page. A usercontrol doesn't have a preinit event, so I can't do it there, and calling Page.Form.Controls.Add(...) in Init, Load or PreRender causes the standard exception "The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases."
I thought I had found a solution by using...
ScriptManager.RegisterClientScriptBlock(Page, Me.GetType, UniqueID + "_Dialog_Div", containerDiv, False)
... which seemed to work well normally, but recently a coworker tried putting an UpdatePanel inside the dialog and now she's getting the error "The script tag registered for type 'ASP.controls_order_viewzips_ascx' and key 'ctl00$ContentBody$OViewZips_Dialog_Div' has invalid characters outside of the script tags: . Only properly formatted script tags can be registered."
How are you supposed to add controls to the pages control collection from inside a user control?
I am getting this wired error when I try to add another control on my user control. Is there a limitaion on how many controls we can have on a single user control?
View 1 RepliesI have a usercontrol that uses a callback to update itself. If I add the control to the aspx page everything works fine. However, when i add the control using Page.LoadControl and Control.Add on a Placeholder i get the following error: "The target 'ctl00$ContentPlaceHolder1$ctl00' for the callback could not be found or did not implement ICallbackEventHandler". I tryed assigning the ID of the control also which failed with the same error. I am using asp.net 2.0.
View 11 RepliesI want to add picture to my SQL database using file Upload control but I don't know which attribute should I use also I don't know how to add it in the stored procedure,
View 3 RepliesI wonder if there is anyway to actually add a HTML element before or/and after the actuall <a>-element thats rendered by the Menu control. For instance I whould like my out put HTML to look like
[Code]....
I need to have a siteMapeNode for a menu control to only show up during development.
The following node would be in the web.sitemap file.
[Code]....
I can either put this node in my web.sitemap file and remove it in release builds.
Or Add the node in debug builds.
Probably done in PreInit or Page_load events.
In my app, I need to create a simple page to let user manage a dictionary table (e.g. OrderCity, there are about 30 records)
What web control is to use for adding, editing and deleting?
In a User Control, I need to add a Div to the end of its parent's page. I've done this in a number of ASPX pages, where I put the code to generate the Div and its contents in the page's PreRender event handler, and it works fine. But when I try to do the same thing in the PreRender event handler for the User Control, I get the following error:
The control collection cannot be modified during DataBind, Init, Load, PreRender or Unload phases.How do I accomplish this in a User Control?
I have a brand new VS 2008 website using 3.5 frame. Default page works but if I add a chart or Gridview I get: Parser Error Message: Could not load file or assembly 'System.Web.DataVisualization, Version=3.5.0.0
in the Web.Config file the <add key="ChartImageHandler" value="storage=file;timeout=20;dir=c:TempImageFiles];" />
I am hosting on our own fully managed server - why the DataVisualization assembly is not being found. Also I was able to load the Default.aspx page until I tried to add a GridView to it. Now it too generates the assembly error eventhough I deleted it. If I comment out the DataVisualization assembly the default and test pages load - there are no controls on these pages. Ony text. Very confused. This is my first attempt at using VS 2008, I am using the trial version.
In the code behind based on a condition i want to add a error message to the Validation Control.
I tried the below.
'Call function to add error message.
protected void AddErrorToValidationSummary(string errorMessage)
{
CustomValidator custVal = new CustomValidator();
custVal.IsValid = false;
custVal.ErrorMessage = errorMessage;
custVal.EnableClientScript = false;
custVal.Display = ValidatorDisplay.None;
this.Page.Form.Controls.Add(custVal);
}
I have a dynamic html table. I can create new rows by clicking 'add' button at runtime.
Each row has 3 textboxes and a fileupload control. A row can be submitted after filling the textboxes and browsing the file for upload.
A 'submit' button is there to submit a row(which will also upload the selected file).
If i select a row, fill it, choose a file to upload after browsing and click submit button, it works fine.
The problem is that if I fill a row (and not submit) and 'add' a new row, my previously selected file (filepath) disappears.
What can I do to keep the file path remain after adding new rows?
